Catalytic efficiency running below threshold. Bank2 to means it’s the right catalytic converter. Basically the cat is running below 75% efficiency when it should be running at 100% efficiency. What happened is the cats inside is damaged. Those damaged pieces have no where to go to. So you know what happens next? Those pieces get sucked back up into the engine and will destroy it. Get it fixed ASAP. I’ve had this code already on my Quest.

Thank you for the information. I just ordered a new one. Our quest has been very good to us since we bought it brand new, the least we can do is take care of it when it needs it. Those parts are not cheap, but well worth it to keep the Quest going. Thanks again!